LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ztrsen_work()

lapack_int LAPACKE_ztrsen_work ( int  matrix_layout,
char  job,
char  compq,
const lapack_logical select,
lapack_int  n,
lapack_complex_double t,
lapack_int  ldt,
lapack_complex_double q,
lapack_int  ldq,
lapack_complex_double w,
lapack_int m,
double *  s,
double *  sep,
lapack_complex_double work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_ztrsen_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_ztrsen( &job, &compq, select, &n, t, &ldt, q, &ldq, w, m, s, sep,
47  work, &lwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int ldq_t = MAX(1,n);
53  lapack_int ldt_t = MAX(1,n);
54  lapack_complex_double* t_t = NULL;
55  lapack_complex_double* q_t = NULL;
56  /* Check leading dimension(s) */
57  if( ldq < n ) {
58  info = -9;
59  LAPACKE_xerbla( "LAPACKE_ztrsen_work", info );
60  return info;
61  }
62  if( ldt < n ) {
63  info = -7;
64  LAPACKE_xerbla( "LAPACKE_ztrsen_work", info );
65  return info;
66  }
67  /* Query optimal working array(s) size if requested */
68  if( lwork == -1 ) {
69  LAPACK_ztrsen( &job, &compq, select, &n, t, &ldt_t, q, &ldq_t, w, m,
70  s, sep, work, &lwork, &info );
71  return (info < 0) ? (info - 1) : info;
72  }
73  /* Allocate memory for temporary array(s) */
74  t_t = (lapack_complex_double*)
75  LAPACKE_malloc( sizeof(lapack_complex_double) * ldt_t * MAX(1,n) );
76  if( t_t == NULL ) {
78  goto exit_level_0;
79  }
80  if( LAPACKE_lsame( compq, 'v' ) ) {
81  q_t = (lapack_complex_double*)
83  ldq_t * MAX(1,n) );
84  if( q_t == NULL ) {
86  goto exit_level_1;
87  }
88  }
89  /* Transpose input matrices */
90  LAPACKE_zge_trans( matrix_layout, n, n, t, ldt, t_t, ldt_t );
91  if( LAPACKE_lsame( compq, 'v' ) ) {
92  LAPACKE_zge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
93  }
94  /* Call LAPACK function and adjust info */
95  LAPACK_ztrsen( &job, &compq, select, &n, t_t, &ldt_t, q_t, &ldq_t, w, m,
96  s, sep, work, &lwork, &info );
97  if( info < 0 ) {
98  info = info - 1;
99  }
100  /* Transpose output matrices */
101  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
102  if( LAPACKE_lsame( compq, 'v' ) ) {
103  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
104  }
105  /* Release memory and exit */
106  if( LAPACKE_lsame( compq, 'v' ) ) {
107  LAPACKE_free( q_t );
108  }
109 exit_level_1:
110  LAPACKE_free( t_t );
111 exit_level_0:
112  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
113  LAPACKE_xerbla( "LAPACKE_ztrsen_work", info );
114  }
115  } else {
116  info = -1;
117  LAPACKE_xerbla( "LAPACKE_ztrsen_work", info );
118  }
119  return info;
120 }
#define LAPACK_ztrsen(...)
Definition: lapack.h:21816
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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